-Fix turrets
I was thinking of calling airstrikes instead? I'm not quite sure about the events for this, though. I was thinking of a relay-loop that checks the players last chatmessage
-Spawn vehicles.
Maybe, if that doesn't result in impossible gameplay due to spawnraping, etc.
-Sentries.
Obviously a possible candidate
-Plant EMP mines.
I like this one alot, but are there working (and released) addons that do this? I know Gravity Cat has this, but its not released.
It would be even cooler if they could be armed/disarmed with the wrench! (Wolfenstein ET, anyone? :P)
-Hack cameras/bots
Uh, probably not. This is WW2-based, so security cameras don't make sense here.
Nice feedback though!